Bhagavad Gita 15.4

ततः पदं तत्परिमार्गितव्य यस्मिन्गता न निवर्तन्ति भूयः।तमेव चाद्यं पुरुषं प्रपद्ये यतः प्रवृत्तिः प्रसृता पुराणी ॥१५.४॥

tataḥ padaṃ tatparimārgitavya yasmingatā na nivartanti bhūyaḥtameva cādyaṃ puruṣaṃ prapadye yataḥ pravṛttiḥ prasṛtā purāṇī

Then, that goal should be sought for, to which, having gone, none returns again. I seek refuge in that Primeval Purusha, from whence streamed forth the ancient activity or energy.

गीता